I've released a little standalone Windows utility that will check single Wavpack files, or all .wv files contained in a directory tree or drive for errors: http://wavpack.gl.tter.org

Easy two-click operation. It writes the full paths of any bad files found to a text file for further processing. Useful when eg. like me you ripped 1500+ files with an overheating CPU, and had to track down the few corrupted ones.